Description - Infineon TLD5191IVREG-EVAL User Manual

TLD5191IVREG-EVAL evaluation board
User Manual
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2

Description

The 4 switches buck-boost converter architecture is among the most efficient buck-boost topologies for high
current applications. The TLD5191ES provides digital and analog dimming control and one flag for diagnostic.
The TLD5191IVREG-EVAL is an evaluation platform for the TLD5191ES as LED driver or voltage regulator.
The default configuration is constant current LED driver with 1.5 A maximum output current. The output current
can be increased up to 6 A by changing resistor RSHO. If higher currents are needed, the output filter has to be
bypassed.
VIN
+VBAT
GND
External
DIMMING
5V
RPWMI
Open: PWMI set «high»
Closed: internal dimming
enabled
5V
RSET
Current adjust
5V
Figure 2 TLD5191IVREG_EVAL board simplified schematic in constant current mode (LED driver)
By reconfiguring few solder jumpers, the board can be used as powerful voltage regulator.
The board can be configured with several trimmers and also contains two status LEDs:
• Trimmer to adjust output voltage when set as voltage regulator
•
Trimmer to adjust output current (via SET pin)
• Trimmer to adjust the PWM duty cycle of embedded PWM engine (via PWMI pin)
• Two LEDs:
One blue LED showing TLD5191ES power on status (IVCC)
o
o One red LED showing TLD5191ES faults status (EF)
User Manual
2021-04-13
EMI
Filter
1
EN/INUVLO
HSGD1 LSGD1
21 EN/INUVLO
PWMI
16
PWMI
VCC_INT
24
IVCC
5V
SET
15
SET
EF
18 EF
RED LED
4 5 8
LSGD2 HSGD2
SWCS 12
11
SGND
14
VFB
9
FBH
10
FBL
17
PWMO
COMP 13
SST
23
SOFT START
19
FREQ
GND
12
3 of 14
V OUT
RSHO
EMI
Filter
VOUT+
GND-
This is a simplified schematic. For
the complete schematic please
refer to Chapter 7.
Test point available on the board
Rev.1.00